Question

public static int mystery(int[] elements, int target)

  {    

for (int j = 0; j < elements.length; j++)

     {   

if (elements[j] == target)

   {    

return j;  

    }     

  }   

return -1;   

}

What would the following code return from mystery ([90, -30, 50], -30)?

Answer 1

input code:

output:

code:

public class Main
{
public static int mystery(int[] elements, int target)
{
/*take a loop*/
for (int j = 0; j < elements.length; j++)
{   
/*check elements is there or not*/
if (elements[j] == target)
{
/*there than return index*/
return j;
}   
}   
/*else return -1*/
return -1;   
}
   public static void main(String[] args)
   {
   /*initialize array*/
   int a[]={90, -30, 50};
   /*call functiona*/
       System.out.println(mystery (a, -30));
   }
}